chore(cms): 清理旧版 CMS 客户端代码，完成 CMS 迁移

- 删除已废弃的 CMS 客户端代码：mock-data、registry、client、storage、renderers 等
- 删除已归档的 CMS 页面组件：home-content-cms、news-content-cms、services-content-cms 等
- 删除 CMS Studio 页面
- 将 CaseStudyData 类型移至 types.ts，统一类型定义
- 移除 content-types 对 registry 的依赖，内联 ContentTypeConfig
- 修复测试文件中对已删除 mock-data 的引用
- 添加 site-config 和 navigation 内容模型种子数据
- 更新 revalidate API 路由使用 CONTENT_TYPE_CONFIGS

共修改 34 个文件，+132 / -5993 行

src/app/(marketing)/cases/[slug]/client.tsx

@@ -4,7 +4,7 @@ import { notFound } from 'next/navigation';
 import CaseDetailPage from '@/components/sections/case-detail-page';
 import { ScrollProgress } from '@/components/ui/scroll-progress';
 import type { ContentItem } from '@/lib/cms/types';
-import type { CaseStudyData } from '@/lib/cms/mock-data';
+import type { CaseStudyData } from '@/lib/cms/types';
 
 interface CaseDetailClientProps {
   item: ContentItem;

src/app/(marketing)/cases/[slug]/page.tsx

@@ -2,7 +2,7 @@ import { notFound } from 'next/navigation';
 import { CaseDetailClient } from './client';
 import { getPublishedItemBySlug, getAllPublishedSlugs } from '@/lib/cms/data-server';
 import { COMPANY_INFO } from '@/lib/constants/company';
-import type { CaseStudyData } from '@/lib/cms/mock-data';
+import type { CaseStudyData } from '@/lib/cms/types';
 import type { Metadata } from 'next';
 
 interface CaseDetailPageProps {